Neutron reflectometry to probe the polymer volume fraction of microgel monolayers in crowded condition at different temperatures
Microgels are theromresponsive particles which show a volume phase transition (VPT) above 32 ºC. They can be used to stabilise smart, responsive emulsions. Interestingly, micorgels forms stable e emulsions when adsorbed in both their swollen (20 ºC) and collapsed state (40 ºC), however if the emulsion is formed with microgels adsorbed at 20 ºC it can be broken by increasing the temperature to 40ºC. The nature of this instability has not yet been understood, but clearly it is related to the structure of the adsorbed microgels orthogonally to the interface below and above their VPT temperature (VPTT). To complete our previous published studies, where we determined the profiles of the polymer volume fraction of microgels at the interface as a function of crowding and temperature, here, we want to understand the physical reasons for the instability of microgel stabilised interface below and above the particle VPTT. To do so, we will use neutron reflectometry to study the differences in the profiles of the polymer volume fraction of different monolayers formed by microgels in their collapsed or swollen state that then we will collapse or swell by changing the temperature.
The data is currently only available to download if you are a member of the proposal team.
The recommended format for citing this dataset in a research publication is in the following format:
Timon Kratzenberg; GERELLI YURI; GUTFREUND Philipp; HOFKEN Tom; Nicoḷ Paracini; P. Sánchez-Puga and Andrea Scotti. (2024). Neutron reflectometry to probe the polymer volume fraction of microgel monolayers in crowded condition at different temperatures. Institut Laue-Langevin (ILL) doi:10.5291/ILL-DATA.9-10-1855
This data is not yet public
This data is not yet public
ILL has partnered with DataCite as the registration agency
for data persistent identifiers.